نتایج جستجو برای: hexamethylenetetramine
تعداد نتایج: 253 فیلتر نتایج به سال:
BLEACHING OF LOOM-STAT COTTON FABRIC USING ACTIVATED SODIUM CHLORITE / HEXAMETHYLENETETRAMINE SYSTEM
Aims. We investigate the purely thermal formation of hexamethylenetetramine (HMT, C6H12N4) in interstellar ice analogs from nonphotolysed ice and compare our results with those for the formation from photolysed ice. Methods. We use Fourier transform-infrared spectroscopy to follow residue formation from VUV irradiation of H2CO:NH3 ice mixture in different concentration ratios. We also report th...
We review two strategies for growing ZnO nanowires from zinc salts in aqueous and organic solvents. Wire arrays with diameters in the nanoscale regime can be grown in an aqueous solution of zinc nitrate and hexamethylenetetramine. With the addition of poly(ethylenimine), the lengths of the wires have been increased to 25 mum with aspect ratios over 125. Additionally, these arrays were made vert...
A novel method for the synthesis of polymer-stabilized quantum dots (QDs) was reported through a onepot hydrothermal reaction. Using this method, a phenol formaldehyde resin (PFR) polymer was formed in situ to passivate the surface of the CdS QDs with hexamethylenetetramine as the source of both the monomer and the crosslinking agent, HCHO. The PFR-capped QDs possessed a uniform size distributi...
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